The Nashville, Tenn., clerk's office confirms to ABC7 a marriage license was applied for by the two.

Cavallari talked publicly for the first time in November about their baby boy. Then in January she said he got his first tooth.

"The baby's great," she said at a fashion show held at Soldier Field. "He's smiling now and laughing and making all kinds of noises. So every day's a lot of fun, it's always something new."

The baby was born last fall, just before Cutler was sidelined with a concussion. The couple got engaged in the spring of 2011, broke up the that fall, reconciled a couple months later as Cavallari competed on "Dancing with the Stars," then announced in January 2012 they were pregnant.